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How to recover password on a Cisco 2960 switch?

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To recover the password on a Cisco 2960 switch, use the following steps:

Step 1. Connect a terminal or PC with terminal-emulation software to the switch console port.

Step 2. Set the line speed on the emulation software to 9600 baud.

Step 3. Power off the switch. Reconnect the power cord to the switch and within 15 seconds, press the Mode button while the System LED is still flashing green. Continue pressing the Mode button until the System LED turns briefly amber and then solid green. Then release the Mode button.

Last Updated on Wednesday, 08 September 2010 09:06

History of RIP (Routing Information Protocol)

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RIP is the oldest of the distance vector routing protocols. Although RIP lacks the sophistication of more advanced routing protocols, its simplicity and continued widespread use is a testament to its longevity. RIP is not a protocol "on the way out." In fact, an IPv6 form of RIP called RIPng (next generation) is now available.

RIP evolved from an earlier protocol developed at Xerox, called Gateway Information Protocol (GWINFO). With the development of Xerox Network System (XNS), GWINFO evolved into RIP. It later gained popularity because it was implemented in the Berkeley Software Distribution (BSD) as a daemon named routed (pronounced "route-dee", not "rout-ed"). Various other vendors made their own, slightly different implementations of RIP. Recognizing the need for standardization of the protocol, Charles Hedrick wrote RFC 1058 in 1988, in which he documented the existing protocol and specified some improvements. Since then, RIP has been improved with RIPv2 in 1994 and with RIPng in 1997.


  • "RFC 1058: Routing Information Protocol,"
  • CCNA Exploration 5.1.1
Last Updated on Wednesday, 04 August 2010 07:29

How to Recover Password of Cisco 2600 and 2800 Series Routers?

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Follow these steps in order to recover your password:

  1. Attach a terminal or PC with terminal emulation to the console port of the router.

    Use these terminal settings:

    • 9600 baud rate
    • No parity
    • 8 data bits
    • 1 stop bit
    • No flow control
  2. If you can access the router, type show version at the prompt, and record the configuration register setting. Use the power switch in order to turn off the router, and then turn the router back on.
  3. Press Break on the terminal keyboard within 60 seconds of power up in order to put the router into ROMMON. If the break sequence does not work try CTRL + Break
Last Updated on Thursday, 29 July 2010 09:27

How to load an IOS onto a Cisco router using ROMmon mode via console cable?

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  1. Connect to the router using the light blue Cisco console cable (make sure the RJ-45 connector is plugged into the console port on the router) using the 9600-8-N-1 settings. The next two steps (changing the console baud rate) are optional.
  2. In ROMmon mode, change the baud rate to 15200 using the confreg command.

rommon 1>confreg
Configuration Summary
enabled are:
break/abort has effect
console baud: 9600
boot: the ROM monitor

¨ The router will guide you through changing the registry. You want to press y to chang the configuration. The only other change you need to make is the change to the console baud rate, set that to 7 (115200).

Last Updated on Monday, 28 June 2010 11:42

How to load an IOS onto a router using ROMmon mode via Ethernet cable?

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  1. Start the TFTP server (make sure the file path is correct and that you allow both transfer and receive)
  2. Connect to the router via Ethernet cable (an Ethernet cable is preferred due to the large size of the file and the maximum speed that data can travel over the console cable)
    ¨ Before the IOS is loaded it is important to make sure that your router has enough memory to support the IOS. The router will allow an IOS to be loaded even if there is not enough memory, in this case a smaller IOS will have to be loaded.
  3. At the rommon prompt enter the following commands (commands are case sensitive, and the use of the directional arrows and tab auto complete function is not allowed):
Last Updated on Monday, 28 June 2010 10:21

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